Surface Materials for Source
If I can find a photograph of something similar, it's fairly straightforward to turn it into a texture file.
This is the first of a series of texturing tutorials from Gronblad, and covers making a texture, and converting it for use in Hammer and HalfLife 2
In this tutorial you will learn how to create and implent normal maps into your custom source engine textures. Normal maps are textures that make your original texture look 3d.
how to make an animated texture work for you in Half-Life. You will need these programs: Photoshop and VTFEdit
Learn how to use custom textures in HL2 and CS:S.
Creating a Fading Spray
Tutorial on making a spray decal that contains a full range of transparency, such as text or graffiti like used in HL2.
how to extract a texture from the game, and then edit it.
Merge HL2 textures to create new ones.
how to make those User Bars often seen on Forums.
What are source spraylogos? Spraylogos are images you can place on most surfaces in source multiplayer games with the exception of models.
Guide for texture artists - creating material textures for source
Pixelated Sprite Sprays
how to make a signature for a forum, using pixel stretch technique to give a blurred matching background.
This tutorial walks you through creating a material with transparency and then placing it into VGUI menu.
This covers creation of custom textures in the Source engine
Visible representation of water textures
Creating Animated Sprays
Convert those old wads to HL2
How to create textures with Paint .NET and notepad.
Custom particles in maps & spritesheet VTFs
Our first tutorial is creating a static spray with no transparency.
This shows you how to make a blend texture for use on displacements and was created by Stadric.
a pretty simple tutorial on making transparent textures
How to make a transparent texture.
From bump mapping to phong shading - This tutorial covers a large number of texture effects. Look inside to discover how to give your textures an extra special touch.
This tutorial will cover the basics of reskinning a model for Hammer and HalfLife2.
This tutorial is a small introduction to skins.
Creating your own decals
This tutorial fom Stadric shows how to make textures look more realistic with depth and texture, by specular bumpmapping.
How to create an alpha blending texture.
Where is it and how do I make one?
Using GIMP to make self illuminating textures
Our second tutorial is creating a static spray with transparency.
This tutorial will show you how to create custom textures for use in creating maps for the Source engine
Some hints for you to manage bumpmapping with your custom textures
How to painlessly make functional blend textures.